PENGGUNAAN COUNTERWEIGHT DAN SOIL NAILING SEBAGAI ALTERNATIF PERKUATAN LERENG SUNGAI GANDONG MAGETAN JAWA TIMUR PASCA LONGSOR
| Main Authors: | Rina Zusianti, Luthfi Amri Wicaksono, Paksitya Purnama Putra |
|---|---|
| Format: | Article info application/pdf eJournal |
| Bahasa: | eng |
| Terbitan: |
Program Studi Teknik Sipil, Fakultas Teknik dan Perencanaan, Universitas Warmadewa
, 2022
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| Subjects: | |
| Online Access: |
https://www.ejournal.warmadewa.ac.id/index.php/paduraksa/article/view/5534 https://www.ejournal.warmadewa.ac.id/index.php/paduraksa/article/view/5534/4026 |
Daftar Isi:
- The landslide occurred on the slopes of the Gandong Magetan River. The location of the river in the middle of the city caused landslides to almost reach people's homes. Efforts should to be made to improve slope stability so that it is safe against landslides. Slope stability analysis uses the LEM (Limit Equilibrium Method) with the Geoslope program. The results of the analysis of the slope stability of the existing conditions get the value of the safety factor of 0.379. Alternative reinforcement that is planned is the manufacture of counterweight slopes. Planning of counterweight slope embankment as many as 4 levels with a height of 3 m each level. The results of the counterweight slope stability analysis get a safety factor value of 0.507. The critical area is at the top of the slope so that soil nailing reinforcement is added. The results of the counterweight slope stability analysis with soil nailing and gabion reinforcement obtained a safety factor value of 1.507. So that the slope reinforcement plan is safe against landslides.
- Longsor terjadi di lereng Sungai Gandong Magetan. Lokasi sungai yang berada di tengah perkotaan mengakibatkan longsoran hampir mencapai rumah warga. Perlu dilakukan upaya peningkatan stabilitas lereng agar aman terhadap longsor. Analisis stabilitas lereng menggunakan metode LEM (Limit Equilibrium Method) dengan progam bantu Geoslope. Hasil analisis stabilitas lereng kondisi eksisting mendapatkan nilai faktor keamanan 0.379. Alternatif perkuatan yang direncanakan ialah pembuatan lereng counterweight. Perencanaan timbunan lereng counterweight sebanyak 4 tingkat dengan tinggi 3 m setiap tingkatnya. Hasil analisis stabilitas lereng counterweight mendapatkan nilai faktor keamanan sebesar 0.507. Area kritis berada pada bagian atas lereng sehingga ditambahkan perkuatan soil nailing. Hasil analisis stabilitas lereng counterweight dengan perkuatan soil nailing dan bronjong didapatkan nilai faktor keamanan sebesar 1.507. Sehingga perencanaan perkuatan lereng tersebut aman terhadap longsor.